Quick coupling device for connecting a tool to a handling equipment, such as the arm of an excavator

A quick coupling device for connecting a tool to a handling equipment, such as the arm of an excavator, comprising a first support member adapted to be connected to an end of said arm, and a second support member adapted to be fastened to the tool to be connected to said arm, wherein said support members are mutually engageable as a result of a relative movement along an axis of coupling generally transverse to the end of said arm, each support member comprising two opposed coupling formations having a double inclination so as to converge towards the axis of coupling both along the direction of mutual connection of the support members and with respect to a plane transverse to the axis of coupling, one of the support members including movable holding means which are adapted to engage at least a corresponding seat of the other member in the mutually coupled configuration of the support members in order to cause mutual locking of the two support members,

• wherein the second support member lacks of any end-of-stroke member for stopping the relative movement of the support members along the axis of coupling, and both the opposed coupling formations of the second support member have respective guide surfaces facing a base portion of the second support member in order to define, together with said base portion, respective side undercut seats for the engagement of the opposed coupling formations of the first support member, whereby, as a result of the relative movement of the support members along the axis of coupling and owing to the mutual engagement of said opposed coupling formations, the first support member wedges into the second support member and originates a coupling force applied to to the support members and directed perpendicular to the axis of coupling, which causes a forced coupling of them that is proportional to the coupling force of the first support member into the second support member.